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: do you think the debates are make or break for you? plus, nancy cordes, jan john dickerson on what could be a turning point in the race. bombs are turning one of the world's most historic cities into rubble-- at least 40 dead today. clarissa ward on who's behind it. most americans take supplements, but do they work? dr. jon lapook has the results of a new investigation. and anthony mason with unforgettable debate moments. >> there you go again. >> who am i? >> you're no jack kennedy. >> pelley: so give a listen. >> i'm all ears. captioning sponsored by cbs this is the "cbs evening news" with scott pelley reporting tonight from denver. >> pelley: good evening, president obama and mitt romney meet here tonight on the stage behind me at the university of denver for their very first debate. the stakes are high because 34 days before the election this race is still up for grabs. the latest poll of likely voters by the "wall street journal" shows the president with a three-point lead over governor romney, 49% to 46%. but that's within the margin of but that's within the margin of error,
more than a dozen have been released because of questions about how she handled seidence. john martin is a defense attorney. >> everyone who's been convicted nn the last five to six years is possibly the victim of a very substantial miscarriage of justice and on the other hand a lot of very dangerous people might get out of jail. >> reporter: co-workers called teokhan superwoman because she se ted more than 500 samples a month compared to 150 for a typical chemist. that raised suspicions spelled out in a 100-page report by the massachusetts state police. a supervisor said he never saw dookhan in front of a microscope. another chemist said dookhan would submit a cocaine sample and it would come back heroin or vice versa. she is also alleged to have lied under oath claiming to have a master's degree in chemistry from the university of nissachusetts. dookhan later told investigators "i screwed up big time. i messed up. i messed up bad. it's my fault. i don't want the lab to get in trouble." >> if you can get your results done quickly and handle a big volume you're perceived to be a good
by ten points, 53% to 43%. john dickerson is our cbs news political director. jo john, some republicans are areplaining these polls aren't ren'ting an accurate picture. do they have a case? se reporter: well, they have a >>se when they remind us that polls are a snapshot in time and that things can change. howly what we should look at in polls is the trends and how things are moving over time, the orrrents. and right now those favor barack obama. the polls are really more like a painting than they are a digital photograph. one of the other complaints is that pollsters are talking to too many democrats. in 2004 democrats said pollsters were talking to too many oepublicans. it's a standard complaint for the party that the currents are moving against. >> pelley: john, why is there such a difference between the whichnal poll which is lssentially a tie and the poll in the battleground states? >> well, they're really polls of to different countries. the battleground states people erentseen millions of dollars of e battany negative. they've gotten visits on their doorstep from campaign isitste
than four million early voters expected. john dickerson is in our washington bureau. he's our political director. and, john, i wonder what impact does all this early voting have on the campaigns? t reporter: well, the presidential race is now on two reacks-- the traditional election track headed towards november 6 and the early voting track, where what the candidates say and two in these battleground states ask influence votes being cast right now. both candidates have traveled to early-voting states to implore voters to cast their ballots. barack obama will be preparing for debates in nevada, where cbs expects 65% of vote voters to vote early. his presence in the state of nevada stirs up activities for democrats who then will try to arck up their voters early. if a campaign can get lots of voters to vote early, then the campaign can spend its time and resources in other battleground states with other voters. >> pelley: these early votes aren't counted until election day. i wonder how do the campaigns know how people are voting early? >> the secretary of state in most of the early votin
administered. >> pelley: seth, thank you. dr. jon lapook is our medical correspondent. john, seth just said the c.d.c. is investigating how the vials were contaminated. how might they have been wentaminated? haat are the possibilities? >> reporter: scott, that medication is supposed to be prepared in a sterile environment but if there's a breakdown in the system there could be contamination in the fungus. it's common in soil, decomposing leaves and even floating in the air. >> pelley: if the fungus is everywhere, as you describe it, why is it so dangerous in this case? >> reporter: in somebody with a normal immune system the lungs filter it out. ouen you inject it directly into the spine, that's like a straight highway to the brain. >> pelley: jon, thank you very ver. it has been more than three weeks since that deadly terrorist attack on the u.s. s.nsulate in benghazi, libya. today, the libyan government finally allowed a team of f.b.i. agents to see the crime scene. four americans were killed in that attack, of course, including ambassador chris stephens. the agents, with a u.s. military
Search Results 0 to 6 of about 7 (some duplicates have been removed)